Data Sheet

CER0644A
1797.5 MHz Duplexer
Revision B - Origin Date: September 12, 2009 – Revision Date: July 27, 2011
Features
• Low Insertion Loss
• Low Ripple
• Excellent Rejection and Isolation
Description
Surface mount, silver (Ag) coated ceramic
duplexer. Developed for use in 1770 MHz
Infrastructure Applications.
Weight: TBD grams typical
Material: Filter is composed of a ceramic
block plated with Ag and a shield made of
Sn plated steel.
Filter complies with RoHS standards.
Electrical Specifications
Parameter
Low Band Response
Passband Iloss
Passband Ripple
Passband Return Loss @ Ant
Passband Return Loss @ Low Band
Attenuation
High Band Response
Passband Iloss
Passband Ripple
Passband Return Loss @ Ant
Passband Return Loss @ High Band
Attenuation
Isolation
Rejection @ Low Band
Rejection @ midpoint
Rejection @ High Band
Frequency
MHz
Typical
@ 25ºC
Specification
@ 25ºC
Spec over
-40ºC to +85ºC
1745 - 1755
1745 - 1755
1745 - 1755
1745 - 1755
1840 - 1850
3490 - 3510
-2.30
0.90
-13.00
-13.00
-60.00
-11.00
-2.40
1.40
-12.00
-12.00
-55.00
-10.00
-2.50
1.50
-12.00
-12.00
-55.00
-10.00
1840 - 1850
1840 - 1850
1840 - 1850
1840 - 1850
1745 - 1755
3680 - 3700
-2.30
1.00
-13.00
-13.00
-60.00
-19.00
-2.40
1.40
-12.00
-12.00
-55.00
-15.00
-2.50
1.50
-12.00
-12.00
-55.00
-15.00
1745 - 1755
1755 - 1840
1840 - 1850
-61.00
-51.00
-61.00
-60.00
-50.00
-60.00
-60.00
-50.00
-60.00
Power into any port
3 Watt max
Note: Supplier shall test each filter to the critical electrical specifications of the above table. Any subsequent audits may deviate from in value due to measurement
repeatability among different test systems. Such deviations shall not exceed the following limits:
Specification Allowance
Insertion Loss
0.1 dB
Return Loss
1.0 dB
Stopbands
1.0 dB
•“This product is covered by one or more of the following U.S. and foreign patents including: US 4,692,726;US 4,742,562; US 4,800,348;US 4,829,274;US 5,146,193;EP 0573597;DE 0573597;FR 0573597;JP 508149/92;KR 142171;US 5,162,760;US
5,218,329;US 5,250,916;US 5,327,109;US 5,488,335;CA 2114029;FR 9306297;GB 2273393;JP 3205337;KR 115113;CN 93106228.4;US 5,512,866;EP 0706719;DE 0706719;FR 0706719;GB 0706719;CN 95190359.4;US 5,602,518;US
5,721,520;US 5,745,018;EP 0910875;DE 0910875;DK 0910875;FR 0910875;GB 0910875;IE 0910875;JP 505182/98;KR 10-323013;US 5,994,978;US 6,462,629;CN 00810420.4;US 6,559,735;US 6,650,202;US 6,834,429.Other US and foreign
patents pending.
•CTS Corporation 2006 reserves all copyrights in the layout, design and configuration of the patterns on this product.”
Document No. 008-0256-0
Page 1 of 2
Rev. X4VH
- CTS Electronic Components - www.ctscorp.com – 4800 Alameda Blvd NE - Albuquerque, NM 87113 -
CER0644A
1797.5 MHz Duplexer
Revision B - Origin Date: September 12, 2009 – Revision Date: July 27, 2011
Mechanical Drawing
1750
A
B
C
D
E
F
G
H
I
J
K
M
L
1845
0.27
max
0.13
0.13
0.13
0.13
0.13
max
0.13
max
0.13
0.13
0.13
PCB Layout
Electrical Response
0
24.04
5.93
1.02
0.79
0.79
12.02
12.02
4.60
0.89
7.04
9.30
8.66
1.86
50
40
-10
30
-20
20
-30
10
1845
1750
0
-40
-10
-50
-20
-60
-30
-70
-40
-80
1700
1750
1800
1850
-50
1900
Packaging and Marking
DIMENSION
REEL DIAMETER
REEL WEIGHT
REEL QUANTITY
UNITS SPECIFICATION
330
mm
2.3
kg
500
ea.
Customer Feed Direction
Product Marking
CTS
644
YWW
Document No. 008-0256-0
Wo
Ao
Bo
Ko
Po
Inches/mm
Inches/mm
Inches/mm
Inches/mm
Inches/mm
1.732/44.0
0.2823"/7.17 0.974"/24.74 0.195"/4.95
Page 2 of 2
0.472"/12
Rev. X4VH
- CTS Electronic Components - www.ctscorp.com – 4800 Alameda Blvd NE - Albuquerque, NM 87113 -
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